Basic Information

Name: Lawrencium 
Symbol: Lr 
Atomic Number: 103 
Atomic Mass: (262.0) amu 
Melting Point: Unknown 
Boiling Point: Unknown 
Number of Protons/Electrons: 103 
Number of Neutrons: 159 
Classification: Rare Earth 
Crystal Structure: Unknown 
Density @ 293 K: Unknown 
Color: Unknown
Date of Discovery: 1961 
Discoverer: Albert Ghiorso 
Name Origin: After Ernest Lawrence 
Uses: No uses known 
Obtained From: Man-made